Vineyard Clusters Monitored by Means of Litterbag-NIRS and Foliar-NIRS Spectroscopic Methods

There is currently a lack of rapid indirect analysis methods for the assessment effects soil microbiota on vine production. Fifteen clusters two Nebbiolo and Erbaluce varieties were identified in five vineyards belonging to cooperative winemakers North West Italy, according differences NDVI index, as monitored by Crop Monitoring OES system. The surveyed 2019 experimental monitoring 75 vines was conducted 2020. first method (Litterbag-NIRS) involved examining hay litterbags with smart SCiOTM device. average litterbag-NIR spectra clusters, far yield concerned, closely fitted measured production yield, an R2 cross-validated value 0.91 0.67 vines. results accounted considering few dominant variables both vines, namely microbic respiration crude protein litterbag (positive), opposed NO3--N ADF (negative). pruning wood also correlated spectra. A second method, foliar pH coupled NIR spectroscopy leaves, then performed. overall predicted from NIRS 0.73 0.79 Canopy Cover. However, most interesting result concerned regressions pH, which clearly negative similar amount: -5.15 kg/pH (R2 0.68) -5.63 0.23) Erbaluce. Litterbag-NIRS, shows high predictive capacity, - or without foliar-NIRS are frugal that can be recommended rational microbial fertility vineyards.